efadv_query_cq - Man Page

#include <infiniband/efadv.h>

int efadv_query_cq(struct ibv_cq *ibvcq, struct efadv_cq_attr *attr,
                   uint32_t inlen);

efadv_query_cq() queries device-specific Completion Queue attributes.

Compatibility is handled using the comp_mask and inlen fields.

struct efadv_cq_attr {
    uint64_t comp_mask;
    uint8_t *buffer;
    uint32_t entry_size;
    uint32_t num_entries;
};

inlen

In: Size of struct efadv_cq_attr.

comp_mask

Compatibility mask.

buffer

Completion queue buffer.

entry_size

Size of each completion queue entry.

num_entries

Maximal number of entries in the completion queue.

efadv_query_cq() returns 0 on success, or the value of errno on failure (which indicates the failure reason).

efadv(7)

• Compatibility mask (comp_mask) is an out field and currently has no values.

Michael Margolin mrgolin@amazon.com\c